@j-g-faustus So I can for example specify snapshot_root user@myserver.com/ and then backup /var/www/localfolder/ /remoteFolder/ ? Are the trailing slashes correctly added ?
– aneuryzmJan 8 '11 at 14:21

@j-g-faustus Sorry, I've just tried now and I get this ERROR: snapshot_root user@myserver.com/ - snapshot_root \ must be a full path
– aneuryzmJan 8 '11 at 15:04

Probably because I can only mount the server first ? So should I run something like mnt servername.com ?
– aneuryzmJan 8 '11 at 15:06

Ah, sorry. The snapshot target, the place you are writing to, must be a local filesystem - only the source can be remote. Mounting might work if under some circumstances, but not in the general case, I think.
– j-g-faustusJan 8 '11 at 16:06

Note: Although I could have simply designated the mounted remote folder instead as a backup destination, (see below), this would not have enabled me to utilise the Rsync server running on the remote target, (in this case a Synology NAS). I used shared keys to allow rsnapshot to access the remote backup target without a password